Umbral Spellbook

You see an umbral spellbook (Def:16, magic level +2, protection earth +3%, energy +3%, fire +3%, ice +3%).
Imbuements: (Empty Slot).

Body Equipment
Spellbooks
Shields
28 more
Imbuable Items
Version 10.30 Implementations
Items with Item IDs
Mobile Items
Non-Path-Blocking Items
Walkable Items
Penetrable Items
Non-Usable Items
Non-Rotatable Items
Items without Map Color
Pickupable Items
Non-Stackable Items
Non-Writable Items
Non-Rewritable Items
Non-Enchantable Items
Non-Enchanted Items
Items without Volume
Non-Consumable Items
Non-Destructible Items
Non-Hangable Items
Marketable Items
Body Equipment with Level Restriction
Magic Booster
Fire Resistant
Energy Resistant
Earth Resistant
Ice Resistant
Items

It can only be wielded properly by sorcerers and druids of level 150 or higher.

Notes

Use this spellbook if you want some all-round resistance and can't use the Umbral Master Spellbook. However, the cost of forging is very high and the following alternatives might be a better choice until you can upgrade further:

Spellbook of Ancient Arcana: +4 magic level, +5% death resistance, can be considerably expensive
Spellbook of Vigilance: +3 magic level, +3 earth resistance, -3% fire resistance, very cheap on most worlds.
Spellbook of Dark Mysteries / Snake God's Wristguard: +3 magic level

This weapon can only be imbued with Basic imbuements. Intricate and Powerful imbuements are not available for Crude and Regular Umbral weapons.